Results 21 to 30 of about 50,714 (273)
Case Studies in Thermal Engineering, 2023 This study experimentally investigates the effect of hydrogen addition on combustion and thermal characteristics of impinging non-premixed jet flames for low-heating values gases (LHVGs).
Hyeon Taek Nam +2 more
doaj +1 more source
Lift-off and blowoff of a diffusion flame between parallel streams of fuel and air [PDF]
, 2006 A numerical analysis is presented to describe the liftoff and blowoff of a diffusion flame in the mixing layer between two parallel streams of fuel (mainly methane diluted with nitrogen) and air emerging from porous walls.
Fernández Tarrazo, Eduardo +2 more
core +2 more sources
Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework
Energies, 2019 Within the framework of a Reynolds averaged numerical simulation (RANS) methodology for modeling turbulence, a comparative numerical study of turbulent lifted H2/N2 flames is presented.
Ali Cemal Benim, Björn Pfeiffelmann
doaj +1 more source
Burned Gas Characteristics of Laminar Lifted Flame at the Beginning of Stream Heating
Journal of Thermal Science and Technology, 2011 This research experimentally investigates the exhaust gas characteristics of a methane-air lifted-jet flame with elevated stream temperatures up to 450 K. Emission indices of NOx and CO were measured by direct gas sampling using a gas detector tube.
Mitsutomo HIROTA +2 more
doaj +1 more source
Case Studies in Thermal Engineering, 2020 The acoustic excitation method was used to improve the combustion performance of rich-combustion flames of swirling dual-disk double-concentric jets. The unexcited and excited conditions were compared.
Omid Ali Zargar
doaj +1 more source
Experimental Investigation of Flame Anchoring Behavior in a LOX/LNG Rocket Combustor
Aerospace, 2023 Hot fire tests of a multi-injector research combustor were performed with liquid-oxygen and liquefied-natural-gas (LOX/LNG) propellants at chamber pressures from 30 up to 67 bar, hence at conditions similar to an upper stage rocket engine.
Jan Martin +4 more
doaj +1 more source
Simulation of a supersonic hydrogen-air autoignition-stabilized flame using reduced chemistry [PDF]
, 2012 A three-step mechanism for H2-air combustion (Boivin et al., Proc. Comb. Inst. 33, 2010) was recently designed to reproduce both autoignition and flame propagation, essential in lifted flame stabilization.
Boivin, Pierre +3 more
core +2 more sources
Characteristics Of Large Diffusion Flames Burning In A Vitiated Atmosphere [PDF]
, 1991 Experiments concerning properties of large diffusion flames burning steadily in a vitiated atmosphere under conditions similar to those which may arise in a room fire are described. The effects of vitiation on the products of combustion and flame lengths,
Kubota, T. +2 more
core +1 more source
Applications in Energy and Combustion Science, 2021 Ensuring efficient and clean combustion performance of liquid-fueled engines requires comprehension of the influence of fuel composition and properties on flame behavior, such as flame liftoff height (LOH) and lean blowout limit (LBO).
Radi Alsulami +4 more
doaj +1 more source
Simulation of hydrogen auto-ignition in a turbulent co-flow of heated air with LES and CMC approach [PDF]
, 2011 Large-Eddy Simulations (LES) with the first order Conditional Moment Closure (CMC) approach of a nitrogen-diluted hydrogen jet, igniting in a turbulent co-flowing hot air stream, are discussed. A detailed mechanism (nine species, 19 reactions) is used to
Lacor, Chris +4 more
core +1 more source